Alloy revestment precision casting materials have an advantagePrecision casting development of aviation eddy current real coupon tests have been carried out, and does not appear material failure phenomenon.For gas turbine blade materials made 700 ℃ / 2000 h and 10000 h hot critical road test, found that the volume fraction of beta equal axis crystal grain with at the bolt time slightly increased. The extent of change within 2000 h from the change in the process of 2000-10000 - h, 10000 h after the layer spacing of did not change obviously, showed that the alloy revestment precision casting layer has excellent thermal stability.